AMD has released a new set of drivers that come with improved performance on Watch_Dogs, an AMD Crossfire profile for Wildstar, and single GPU and multi-GPU performance enhancements on Lichdom.
(PC, Watch Dogs)

AMD had a watch dogs performance patch before as well, this is just another one. Probably because of the whole Nvidia not allowing ubisoft to share any source code that would greatly help AMD optimize. Ubisoft is in Nvidia's wallet sadly.